Oval Cut

Brazilian alexandrite 0.116ct loose Sale price¥15,800

Vietnam Aquamarine 0.398ct Loose Sale price¥5,980

Brazilian Paraiba Tourmaline 0.341ct loose stone (CuO:1.81%, MnO:1.96%) Nakahokan analysis report Sale price¥598,000

[On sale June 13th at 10 PM] Pakistani Lapis Lazuli (Lazurite) 0.103ct Loose Stone with Certification Sale price¥19,800

[Sales on 6/13 at 10 PM] Madagascar Pink Sapphire 0.239ct Loose Stone, Japan-Germany Gemstone Institute certified Sale price¥18,800

[On sale 6/12 10 PM JST] Synthetic Alexandrite 1.076ct Loose Stone Sale price¥25,800

[Sale June 16th, 10 PM] Myanmar Red Spinel 0.453ct Loose Stone Sale price¥19,800

[On Sale June 20th, 10 PM JST] Myanmar Leuco Garnet 0.128ct Loose Stone with Appraisal Report Sale price¥25,800

【Sales start at 10 PM on June 21】Myanmar Leuco Garnet 0.108ct Loose Gemstone with Certificate Sale price¥22,800

【On sale June 14, 10 PM】Spanish Andalusite 0.416ct Loose Stone Sale price¥9,800

[On sale June 17th, 10 PM] Tanzanian Tanzanite 0.372ct Loose Stone Sale price¥14,800

[On Sale June 13th, 10 PM JST] Brazilian Santa Maria Aquamarine 0.215 ct Loose Stone with Appraisal Report Sale price¥15,800

[Sale on June 13th at 10 PM] Brazilian Santa Maria Aquamarine 0.183ct Loose Stone with Certification Sale price¥12,800

[12551312] Zimbabwean Blue Apatite (UV Type) 1.312ct Loose Stone Sale price¥8,800

[12551148] Australian black opal 3.890ct loose stone Sale price¥69,800

Sri Lankan Star Sapphire 2.093ct Loose Sale price¥8,800

Sri Lankan Star Sapphire 1.339ct Loose Sale price¥12,800

Sri Lankan Star Sapphire 1.682ct Loose Sale price¥12,800

Sri Lankan Star Sapphire 1.225ct Loose Sale price¥12,800

Mexican Opal 0.499ct Loose Sale price¥3,980

Mexican Opal 0.854ct Loose Sale price¥5,980

Lepidocrocite in quartz 0.532ct loose Sale price¥6,980

[On sale June 7th, 10 PM] Nigerian Cobalt-bearing Gahnite, 0.158ct loose stone with gemological report Sale price¥22,800

[Sale on June 7 at 10 PM] Nigerian Cobaltian Garnet 0.154ct Loose Gemstone with Certificate Sale price¥24,800

[On sale June 6th, 10 PM] Nepal Kyanite 2.906ct Loose Stone with Certificate Sale price¥19,800

[On sale June 6, 10 PM JST] Malawi Moonstone 2.233ct Loose Stone Sale price¥15,800

[On sale June 13th, 10 PM JST] Malawi Moonstone 2.055ct Loose Stone Sale price¥16,800

[On Sale May 30th at 10 PM] Malawi Moonstone 1.475ct Loose Gemstone Sale price¥9,800

[Sales start May 31, 10 PM JST] Brazilian Marcasite in Quartz Loose Stone 6.670ct Sale price¥25,800

Tanzanian Kornerupine 0.172ct loose stone Sale price¥12,800

Paraiba tourmaline from Brazil 0.018ct loose Sale price¥12,800

Paraiba tourmaline from Brazil 0.023ct loose Sale price¥19,800

[On sale June 6, 10 PM JST] Brazilian Seafoam Tourmaline 0.334ct Loose Stone Sale price¥16,800

[On sale June 5th at 10 PM] Brazilian Alexandrite 0.128ct Loose Stone Sale price¥29,800

アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.556ctルース

[On sale May 30th at 10 PM] Madagascar Andesine-Labradorite (commonly known as Rainbow Moonstone) 0.556ct Loose Stone Sale price¥8,800

[On Sale June 2nd, 10 PM JST] Mozambique Ruby 0.464ct Loose Gemstone with Identification Report Sale price¥29,800

[Sale starts June 13th at 10 PM] Kochi Prefecture Blood Coral 2.340ct Loose Stone Sale price¥19,800

[Sale on June 13 at 10 PM] Kochi Prefecture Red Coral Loose Stone 2.294ct Sale price¥19,800

[Sales start 10 PM on June 8th] High-Grade Red Coral from Kochi Prefecture, 2.187ct Loose Stone Sale price¥19,800

【Sales Start: June 8th, 10 PM JST】Kochi Prefecture-produced Red Coral, 1.975ct Loose Stone Sale price¥18,800

Paraiba tourmaline from Brazil 0.071ct loose Sale price¥19,800

Myanmar Star Spinel 2.030ct Loose Sale price¥69,800

Mozambique pink spinel 0.670ct loose stone Sale price¥22,800

Sri Lankan Star Sapphire 6.477ct Loose Sale price¥49,800

Sri Lankan Star Sapphire 7.111ct Loose Sale price¥59,800

Colombian pyrite emerald 3.817ct loose stone Sale price¥59,800

0.165ct Unheated Silky Pink Sapphire from Vietnam Sale price¥5,980

Tanzanian Chrome Tourmaline 0.760ct Loose Stone Sale price¥5,980

KARATZ Custom Made

Why not take your favorite gemstone that you found at KARATZ and have it made into custom-made jewelry? It will be made by skilled Japanese craftsmen.
We carefully craft each piece of jewelry, starting with the stone setting, to match the individual characteristics of the gemstone.

KARATZ・Five Commitments

So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.

KARATZ's Initiatives and Social Contributions

We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.

KARATZ Books

These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.

jeweler's tools

For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.